CN106089708A - Composite double screw vacuum pump - Google Patents
Composite double screw vacuum pump Download PDFInfo
- Publication number
- CN106089708A CN106089708A CN201610608707.XA CN201610608707A CN106089708A CN 106089708 A CN106089708 A CN 106089708A CN 201610608707 A CN201610608707 A CN 201610608707A CN 106089708 A CN106089708 A CN 106089708A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- helical tooth
- fuel tank
- screw
- pitch helical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
Composite Double screw vacuum pump, relates to the manufacturing technology field of a kind of dry vacuum pump.Including motor, a pair intermeshing screw rod, screw sleeve, bearing, shaft coupling, fuel tank, gear, fan housing, fan blade, a pair screw rod is respectively and drives screw rod and driven screw；Drive screw rod, that driven screw engages each other face profile of tooth is identical, drive screw rod, driven screw respectively by the first uniform pitch helical tooth that a circle axial length is bigger, one circle gradient pitch helical tooth is set after the first uniform pitch helical tooth, the second uniform pitch helical tooth that some axial lengths are less is set after gradient pitch helical tooth, the initial segment largest portion of described gradient pitch helical tooth is identical with the pitch of described first uniform pitch helical tooth, and the latter end pitch of described gradient pitch helical tooth is identical with the pitch of described second uniform pitch helical tooth.This Composite Double screw vacuum pump speed of evacuation is fast, vacuum is high, energy consumption is low, service life is long.
Description
Technical field
The present invention relates to the manufacturing technology field of a kind of dry vacuum pump.
Background technology
Along with industrial development and the requirement of environmental conservation, the piston pump in traditional oil sealing vacuum pump and dry pump, pawl
Pump, vortex pump etc. can not meet current many technology requirements, such as: oil sealing vacuum pump cannot be used for gas and reclaims, no
The requirement of clean vacuum can be used for.Other dry pump have that energy consumption is big, noise is big, vacuum is low, service life is short, maintenance difficult and dimension
Protect the shortcomings such as expensive.
Summary of the invention
For solving above-mentioned problems, this practicality newly provides a kind of Composite Double screw vacuum pump.
The present invention includes motor, a pair intermeshing screw rod, screw sleeve, bearing, shaft coupling, and screw rod described in a pair is respectively
For driving screw rod and driven screw, the shell end of described motor connects motor and pump head adpting flange, described motor and pump head
The front end of adpting flange connects fan housing, connects near-end fuel tank in the front end of described fan housing, and the input of described driving screw rod passes through
Shaft coupling is connected with the outfan of described motor, and described shaft coupling is arranged in described fan housing, motor and pump head adpting flange, institute
Arranging fan blade in stating fan housing, described fan blade is coaxially connected on described shaft coupling；The is connected on the power shaft of described driving screw rod
One gear, the input of described driven screw connects the second gear, described first, second gear engagement, described first, second tooth
Wheel is arranged in described near-end fuel tank；Between power shaft and the described fan housing of described driving screw rod, sealing member, described driving are set
It is respectively provided with bearing, bearing gland, seal receptacle between screw rod, driven screw and described near-end fuel tank；Before described near-end fuel tank
End connects screw sleeve, and the front end of described screw sleeve connects far-end fuel tank, and described driving screw rod, driven screw are arranged on described screw rod
In set, described driving screw rod, the end of driven screw are fixed on described far-end oil by bearing, bearing gland, seal receptacle respectively
In case；Described driving screw rod, that driven screw engages each other face profile of tooth is identical, and described driving screw rod, driven screw are respectively by a circle
The first uniform pitch helical tooth that axial length is bigger, arranges a circle gradient pitch helical tooth after the first uniform pitch helical tooth,
The second uniform pitch helical tooth that some axial lengths are less is set after gradient pitch helical tooth, described gradient pitch helical tooth
The initial segment largest portion is identical with the pitch of described first uniform pitch helical tooth, the latter end pitch of described gradient pitch helical tooth with
The pitch of described second uniform pitch helical tooth is identical.
This screw vacuum pump uses the compound screw rod of multiple pitch, and it passes through driven by motor drive screw turns, and drives
The driven screw also concomitant rotation of dynamic screw rod engagement, both direction of rotation are contrary；Drive between driven screw, screw rod and set it
Between, all leave very small-gap suture, so when screw rod rotates, air is drawn through compression from air vent discharge from air entry.This is compound
The Twin-screw vacuum pump speed of evacuation is fast, vacuum is high, energy consumption is low, service life is long.
The free end of far-end fuel tank of the present invention is provided with fuel tank cap, described fuel tank cap and described driving screw rod, driven spiral shell
Being provided with gap between the end of bar, end and fuel tank cap at described driving screw rod, driven screw are respectively provided with a pair strong magnet,
One of Magnet of every pair of described strong magnet is separately fixed at described driving screw rod, the end of driven screw, every pair described by force
Another block Magnet of Magnet is separately fixed at the inner side of described fuel tank cap, between two blocks of Magnet of every pair of described strong magnet each other
Every and mutually corresponding.By arranging strong magnet between axle head and fuel tank cap, during such evacuation, can effectively reduce the axle of screw rod
Xiang Li, can be greatly improved the service life of angular contact ball bearing, extends the service life of pump further.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Specific embodiment
As it is shown in figure 1, this Composite Double screw vacuum pump, including motor 1, a pair intermeshing screw rod 2, screw sleeve 3, connection
Axial organ 5, air inlet, gas outlet, a pair screw rod 2 is respectively and drives screw rod 6, driven screw 7, and the shell end of motor 1 connects electricity
Pump head adpting flange 8, the front end of motor pump head adpting flange 8 connects fan housing 9, connects near-end fuel tank 10 in the front end of fan housing 9,
The input driving screw rod 6 is connected with the outfan of motor 1 by shaft coupling 5, and shaft coupling 5 is arranged on fan housing 9, motor and pump head
In adpting flange 8, arranging fan blade 11 in fan housing 9, fan blade 11 is coaxially connected on shaft coupling 5；Drive and connect on the power shaft of screw rod 6
Connecing the first gear 12, the input of driven screw 7 connects the second gear 13, and first, second gear 12,13 engages, and first, second
Gear 12,13 is arranged in near-end fuel tank 10；Drive and sealing member 14 is set between power shaft and the fan housing 9 of screw rod 6, drive screw rod
6, bearing 15, bearing gland 16, seal receptacle 17 it are respectively provided with between driven screw 7 and near-end fuel tank 10；Before near-end fuel tank 10
End connects screw sleeve 3, and the front end of screw sleeve 3 connects far-end fuel tank 19, drives screw rod 6, driven screw 7 to be arranged in screw sleeve 3,
Drive screw rod 6, the end of driven screw 7 is fixed on far-end fuel tank 19 by bearing 20, bearing gland 21, seal receptacle 22 respectively
In；Drive screw rod 6, that driven screw 7 engages each other face profile of tooth is identical, drives screw rod 6, driven screw 7 respectively by least one circle axle
To the first uniform pitch helical tooth 23 that length is bigger, at least one circle gradient pitch spiral shell is set after the first uniform pitch helical tooth 23
Rotation tooth 24, arranges the second uniform pitch helical tooth 25 that some axial lengths are less, gradient pitch after gradient pitch helical tooth 24
The initial segment largest portion of helical tooth 24 and the pitch of the first uniform pitch helical tooth 23 are identical, the latter end of gradient pitch helical tooth 24
Pitch is identical with the pitch of the second uniform pitch helical tooth 25.
Further, the free end of far-end fuel tank 19 is provided with fuel tank cap 26, fuel tank cap 26 and driving screw rod 6, driven screw 7
End between be provided with gap 27, driving screw rod 6, end and the fuel tank cap 26 of driven screw 7 are respectively provided with a pair strong magnet
28, one of Magnet 28-1 of every pair of strong magnet 28 are separately fixed at driving screw rod 6, the end of driven screw 7, every pair of strong magnetic
Another block Magnet 28-2 of ferrum 28 is separately fixed at the inner side of fuel tank cap 26, two pieces of Magnet 28-1,28-2 of every pair of strong magnet 28
Between spaced and mutually corresponding.
Claims (2)
1. Composite Double screw vacuum pump, including motor, a pair intermeshing screw rod, screw sleeve, bearing, shaft coupling, a pair institute
Stating screw rod and be respectively driving screw rod and driven screw, the shell end of described motor connects motor and the adpting flange of pump head, institute
The front end stating motor and pump head adpting flange connects fan housing, connects near-end fuel tank, described driving screw rod in the front end of described fan housing
Input be connected with the outfan of described motor by shaft coupling, described shaft coupling is arranged on described fan housing, motor and pump head
In adpting flange, arranging fan blade in described fan housing, described fan blade is coaxially connected on described shaft coupling；Described driving screw rod defeated
Entering and connect the first gear on axle, the input of described driven screw connects the second gear, described first, second gear engagement, institute
State first, second gear to be arranged in described near-end fuel tank；Arrange close between power shaft and the described fan housing of described driving screw rod
Sealing, is respectively provided with bearing, bearing gland, seal receptacle between described driving screw rod, driven screw and described near-end fuel tank；Described
The front end of near-end fuel tank connects screw sleeve, and the front end of described screw sleeve connects far-end fuel tank, and described driving screw rod, driven screw set
Putting in described screw sleeve, described driving screw rod, the end of driven screw are fixed by bearing, bearing gland, seal receptacle respectively
In described far-end fuel tank；It is characterized in that described driving screw rod, that driven screw engages each other face profile of tooth is identical, described driving spiral shell
Bar, driven screw by the first uniform pitch helical tooth that a circle axial length is bigger, set respectively after the first uniform pitch helical tooth
Put a circle gradient pitch helical tooth, the second uniform pitch spiral that some axial lengths are less is set after gradient pitch helical tooth
Tooth, the initial segment largest portion of described gradient pitch helical tooth is identical with the pitch of described first uniform pitch helical tooth, described gradually
The latter end pitch of variable-pitch auger tooth is identical with the pitch of described second uniform pitch helical tooth.
Composite Double screw vacuum pump the most according to claim 1, it is characterised in that the free end of described far-end fuel tank is provided with
Fuel tank cap, described fuel tank cap and described driving screw rod, driven screw end between be provided with gap, described driving screw rod, from
The end of dynamic screw rod is respectively provided with a pair strong magnet with fuel tank cap, and one of Magnet of every pair of described strong magnet is separately fixed at
Described driving screw rod, the end of driven screw, another block Magnet of every pair of described strong magnet is separately fixed at described fuel tank cap
Inner side, spaced and mutually corresponding between two blocks of Magnet of every pair of described strong magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610608707.XA CN106089708A (en) | 2016-07-29 | 2016-07-29 | Composite double screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610608707.XA CN106089708A (en) | 2016-07-29 | 2016-07-29 | Composite double screw vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106089708A true CN106089708A (en) | 2016-11-09 |
Family
ID=57478515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610608707.XA Pending CN106089708A (en) | 2016-07-29 | 2016-07-29 | Composite double screw vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106089708A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849486A (en) * | 2017-03-02 | 2017-06-13 | 沈阳工业大学 | It is a kind of parallel to driving Contiuum type magneto double screw pump system |
| CN107588002A (en) * | 2017-10-16 | 2018-01-16 | 扬州日上真空设备有限公司 | A kind of Twin-screw vacuum pump of low noise |
| CN110714920A (en) * | 2019-09-20 | 2020-01-21 | 胡涛 | Double-screw air compressor |
| CN111173749A (en) * | 2018-11-09 | 2020-05-19 | 上海海立电器有限公司 | Vertical rotary compressor |
| CN111247341A (en) * | 2017-10-17 | 2020-06-05 | 莱宝有限公司 | Screw rotor |
| WO2021197704A1 (en) * | 2020-03-31 | 2021-10-07 | Vacuubrand Gmbh + Co Kg | Electric motor and vacuum pump |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60116892A (en) * | 1983-11-30 | 1985-06-24 | Hitachi Ltd | Screw type vacuum pump |
| CN1444700A (en) * | 2000-07-25 | 2003-09-24 | 阿特里尔斯布希股份有限公司 | Twin screw rotors and displacement machines containing the same |
| CN1451876A (en) * | 2002-04-15 | 2003-10-29 | 乐金电子(天津)电器有限公司 | Compressor rotation shaft supporting structure |
| CN2632381Y (en) * | 2003-07-04 | 2004-08-11 | 李国坤 | Permanent magnetic suspension thrust bearing |
| CN1675477A (en) * | 2002-07-10 | 2005-09-28 | 特伯考尔公司 | Device to relieve thrust load in a rotor-bearing system using permanent magnets |
| CN201159172Y (en) * | 2008-02-01 | 2008-12-03 | 梁伯顺 | Improved structure of screw vacuum pump |
| CN102937094A (en) * | 2012-10-22 | 2013-02-20 | 台州职业技术学院 | Dry screw vacuum pump varying pitch screw |
| CN203926013U (en) * | 2014-05-30 | 2014-11-05 | 北京威鹏晟科技有限公司 | A kind of variable pitch dry screw vacuum pump |
| CN204984884U (en) * | 2015-05-29 | 2016-01-20 | 烟台沃尔姆真空技术有限公司 | Variable -pitch dry screw vacuum pump |
-
2016
- 2016-07-29 CN CN201610608707.XA patent/CN106089708A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60116892A (en) * | 1983-11-30 | 1985-06-24 | Hitachi Ltd | Screw type vacuum pump |
| CN1444700A (en) * | 2000-07-25 | 2003-09-24 | 阿特里尔斯布希股份有限公司 | Twin screw rotors and displacement machines containing the same |
| CN1451876A (en) * | 2002-04-15 | 2003-10-29 | 乐金电子(天津)电器有限公司 | Compressor rotation shaft supporting structure |
| CN1675477A (en) * | 2002-07-10 | 2005-09-28 | 特伯考尔公司 | Device to relieve thrust load in a rotor-bearing system using permanent magnets |
| CN2632381Y (en) * | 2003-07-04 | 2004-08-11 | 李国坤 | Permanent magnetic suspension thrust bearing |
| CN201159172Y (en) * | 2008-02-01 | 2008-12-03 | 梁伯顺 | Improved structure of screw vacuum pump |
| CN102937094A (en) * | 2012-10-22 | 2013-02-20 | 台州职业技术学院 | Dry screw vacuum pump varying pitch screw |
| CN203926013U (en) * | 2014-05-30 | 2014-11-05 | 北京威鹏晟科技有限公司 | A kind of variable pitch dry screw vacuum pump |
| CN204984884U (en) * | 2015-05-29 | 2016-01-20 | 烟台沃尔姆真空技术有限公司 | Variable -pitch dry screw vacuum pump |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849486A (en) * | 2017-03-02 | 2017-06-13 | 沈阳工业大学 | It is a kind of parallel to driving Contiuum type magneto double screw pump system |
| CN107588002A (en) * | 2017-10-16 | 2018-01-16 | 扬州日上真空设备有限公司 | A kind of Twin-screw vacuum pump of low noise |
| CN111247341A (en) * | 2017-10-17 | 2020-06-05 | 莱宝有限公司 | Screw rotor |
| CN111173749A (en) * | 2018-11-09 | 2020-05-19 | 上海海立电器有限公司 | Vertical rotary compressor |
| CN111173749B (en) * | 2018-11-09 | 2022-03-11 | 上海海立电器有限公司 | Vertical rotary compressor |
| CN110714920A (en) * | 2019-09-20 | 2020-01-21 | 胡涛 | Double-screw air compressor |
| WO2021197704A1 (en) * | 2020-03-31 | 2021-10-07 | Vacuubrand Gmbh + Co Kg | Electric motor and vacuum pump |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161109 |
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| WD01 | Invention patent application deemed withdrawn after publication |